[86] Vacuum line diagram

[youwish2bme]

Guys I'm trying to sort out the vacuum lines on the 86 that I'm working on to get them hooked back up. Is there a diagram of the vacuum lines set up? I know from some other forums I frequent that sometimes a picture is worth a thousand words. Does anyone have a picture with the vacuum lines set up on a 86? Thanks guys!

Dave

[youwish2bme]

I've been searching the archives and haven't found a good picture yet. Does anyone have a stock 86 that could take a few pics of the vac lines? Thanks!

Dave

[Blake_H]

Here ya' go. Hope it helps.




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[JAG66]

Dave, now you can buy 100 feet of vacuum hose. Good to hear you're working out a few kinks I never got to.
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[michael bustamante]

HAVE FUN. I had to replace all my vacuum line and it took forever! 1 piece at a time!! it took 14 feet for me. i dont know they cant make line that lasts longer than 25 years!

[youwish2bme]

Originally Posted by JAG66

Dave, now you can buy 100 feet of vacuum hose. Good to hear you're working out a few kinks I never got to.
Posted via Mobile Device

No worries brother! Just working on the truck the same as you were. She runs great just looking to see what was disconnected by the previous owners...

[Stoney]

It's actually pretty easy. Just time consuming. Were does the AC vaccum line tie into?

[youwish2bme]

Originally Posted by Stoney

It's actually pretty easy. Just time consuming. Were does the AC vaccum line tie into?

Right now the line is hanging free from the firewall... Or were you talking about on the diagram?

Dave

[Malo83]

Originally Posted by Blake_H

Here ya' go. Hope it helps.




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This is the snake pit on my 83




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[Stoney]

That's my problem, too. I can't figure out were the line hanging from the firewall goes?
I don't see it on the diagram.

[youwish2bme]

Originally Posted by Stoney

That's my problem, too. I can't figure out were the line hanging from the firewall goes?
I don't see it on the diagram.

Its not on this diagram it is part of the heat/ac system. It provides the vacuum source for the three (3) vacuum cans inside the cab that control the doors inside the heater/ac box. The three cans control the defroster duct, recirc for MAX AC and the last is the one that selects vent or feet...

I found out tonight two of the three work..

[Stoney]

I guess that's a good reason why mine doesn't work.
Thanks for the info. So do you know were it supposed to go?

[youwish2bme]

Originally Posted by Stoney

I guess that's a good reason why mine doesn't work.
Thanks for the info. So do you know were it supposed to go?

Yeah, sorry.. The line needs to be connected to a check valve that has a total of three ports. The first should be to supply manifold vacuum, second will be after the check valve to the line and the third is also after the check valve and goes to the vacuum tank located on the LH side of the firewall below the wiper motor. The tank is there to supply vacuum under high load conditions when you loose manifold vacuum. Hope this helps.

Dave

[Stoney]

Okay Thanks, I'll check it out.